Salvia has a wide range of colours, will have to find a green one for a rainbow picture.

After Bob's great talk, thought to have some of his Salvia's on the site, with Gardening helpers in the background.
1 Red -SalviaTimboon
2 Normally blue/white - Salvia guaranitiea
3 Orange -Salvia adenophora
4 White/blue -Salvia meigans magic
5 Purple/White - Salvia leucantha
6 Yellow -Salvia madrensis
7 Light purple - Salvia Iodantha